agent0ai Agent-Zero 1.7/1.8/1.9/1.10 FileBrowser file_browser.py save_text_file path traversal

Summaryinfo

A vulnerability classified as critical has been found in agent0ai Agent-Zero 1.7/1.8/1.9/1.10. This issue affects the function save_text_file of the file python/helpers/file_browser.py of the component FileBrowser. This manipulation causes path traversal. This vulnerability is tracked as CVE-2026-51851. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in agent0ai Agent-Zero 1.7/1.8/1.9/1.10. Affected by this vulnerability is the function save_text_file of the file python/helpers/file_browser.py of the component FileBrowser. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

modelscope agent-zero 1.7, 1.8, 1.9, and 1.10 is vulnerable to Directory Traversal in python/helpers/file_browser.py:FileBrowser.save_text_file. The save_text_file method accepts user-controlled file paths without normalization or validation, allowing path traversal attacks.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-51851 since 06/08/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/29/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-113288). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• agent0ai

Name

• Agent-Zero

Version

• 1.7
• 1.8
• 1.9
• 1.10

Website

• Product: https://github.com/agent0ai/agent-zero/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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